Annotated bibliography of Pennsylvania geology ; supplement to 1969.

Bibliographic Details
Main Author:	Cramer, Howard Ross, 1925-
Format:	Book
Language:	English
Published:	Harrisburg : Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1972.
Series:	General geology report ; 61.
Subjects:	Geology > Pennsylvania > Bibliography.

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